spotting again Started spotting again. I'm getting more worried now,this is my third time…

spotting again

Started spotting again. I'm getting more worried now,this is my third time spotting/bleeding and I'm only about 8 weeks. I had a subchronic hematoma when I first went to the doctors due to spotting. the second time I bled randomly and heavy fast went to the ER, they said the hematoma went away and that caused my bleeding. Now it's just brown spotting.i have my ultrasound tomorrow so I don't know if I should go in tonight or wait till tomorrow. This is just so stressful and I have no idea what to do.